Hospital officials hope that the larger facility will encourage Huntington residents to get a wide range of services there, from check-ups to X-rays.

The building's second and third floors, which will be occupied mostly by offices for Hoag Medical Group physicians, are designed to encourage collaboration and easy communication between primary care doctors and specialists, Shields said.

The layout aims to make the traditional primary care model easier — and quicker — for patients to navigate, he said.

The revamped center's amenities include centralized check-in areas on each floor, a newly concentrated imaging center — equipped with new machines, as well as ones that had previously been scattered around the center — a pharmacy and a "state of the art" parking structure with 456 spots.

The facility includes a major boost to women's services, including a new type of 3D mammography that will help doctors better detect cancer in younger women. Hoag was the first hospital in Orange County to offer the technology, starting a couple of years ago.

Patients will be able to visit more than 30 Hoag-affiliated doctors, including specialists in close to a dozen fields, such as gastroenterology, orthopedics, oncology, cardiology, pulmonology and rheumatology.